Wetland drainage and streamflow trends in Illinois

Misganaw Demissie, Abdul Khan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Long-term streamflow records from 30 gaging stations in Illinois were analyzed to assess the impact of wetland drainage on streamflow trends. The objective of the research was to determine any detectable trends, either increasing or decreasing, in streamflow parameters that can be attributed to wetland drainage. The analysis shows that most of the stations show increasing trends for annual daily mean flow and annual daily peakflow. At the same time, however, daily peak precipitation also shows increasing trends. The ratio between daily peakflow and daily peak precipitation shows increasing trends for 52% of the stations. Increasing trends for the ratio between peakflow and peak precipitation are found for 70% of the stations in southern Illinois and 50% of the stations in central Illinois, whereas only 33% of the stations in northern Illinois show increasing trends. Low-flow analysis indicates that low flows show increasing trends for 88% of the stations analyzed.

Original languageEnglish (US)
Title of host publicationProceedings - National Conference on Hydraulic Engineering
EditorsRichard M. Shane
PublisherPubl by ASCE
Number of pages5
ISBN (Print)0872628167
StatePublished - 1991
EventProceedings of the 1991 National Conference on Hydraulic Engineering - Nashville, TN, USA
Duration: Jul 29 1991Aug 2 1991

Publication series

NameProceedings - National Conference on Hydraulic Engineering


OtherProceedings of the 1991 National Conference on Hydraulic Engineering
CityNashville, TN, USA

ASJC Scopus subject areas

  • Engineering(all)


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